Apparatus for controlling air and other gas compressors.



G. B H'LVTELMMER. GOMRMMLG me: mw umm ma COMYHLSSORS.

APPARATUS l'O Mruuxrwr: 11mm Au@ Patented Dec. T2. 1913 UNITED PATENT OFFlC.,

GUSTAVE E. HUTTELMAIER, OF SCOTTDALE, PENNSYLVANIA.

APPARATUS FOR CONTROLLING AIR AND OTHER GAS COMPRESSORS.

Specification of Letters Patent.

Patented Dec. 2, 1913,

Application led August 4, 1911. Serial No. 642,354.

To all whom it may concern.'

lie it l-iiizwn that l. (il Hum@ E. iiuiuicr italien. a citizen of the i'nited itritwi rr- Sidinpj at rirotiiiaie, in ilu county ot difesiV the operation ol5 suon gaseous tiuid l1compres-` sors or piniips whereby increase in the teniperature fi the gases during ctiiiipression to or approaching ay iiredeteriiiined `oi ilaufferous degree will ei'ect the automatic stoppage ot' the. compressors or pumps :ind prevent continued operation of the apparatus when the temperature of the gases reaches or rises above such predetermined limit.

To that end the iiif'entioii consists in utilizingior employing means actuated by the increase. or rise in teii'iperature of the com` pressed gases in completing an electric eireuit, and eiriployingthe completed electric circuit to thereby electrit'y and energiY-e'eleetrioal mechanism arranged, when energized. to stop the coiiipi'essor er pump driviimr mechanism.

'.leferifnng;r to the accompanying dra'ivingjs forming' part. of this specification, Iiigure l shows a side elevation haringr meeliaiiism constructed and arangged and adapted for use in aerordanoe with my invention. Fig. 2 is a sectional elevation showing one type. of stop valve adapted for use with my involition. Fig. is a sectional elevation 'showing' a piiol valve. as constructed `for use .with the apparatus forming this invention.

1n thel drawings, the numeral design:ities the base of a multiple. stage. air coinpresaor mounted upon a foundation 3 and having a steam cylinder #L which is operatively corr nected to the crank shaft 5. Fly wheelr.y ti which are mounted on opposite ends of this shaft 5 are provided with crank pins T. The

crosshead pins 8 on the. compressor crosshead are connected through the connecting` rods 9 to the crank pins 7 on the ilywiieels t3. Y

A multiple stage coinprcseor is Sher-:n having a low pressure cylinder .i0 and high piersnrc cylinder l1 operatively connected. together, altbtiugh my improved apparatus 1 is applicablt for use with any desired type g it rcnipressor.

the discharge pipe for the high pressure cylinder lt as shown is provided with a thermostat or thermometer i3 which may be of the recordingor non-recording type and this thernioetat or thermometer is electrically connected by means of feed Wires llt, 15 to the solenoid coil ib" having a vertically movable solenoid core l?.

Instead ot' the thermometer 13 a mercury Cup haring` suitable electric contacts may be used or any other known device for completing' an electric circuit which is operable by :iii increase iu temperature may be 'enipioyetl, er

The steam cylinder i of the compressor is provided with a steam eupply pipe 18 havingr an automatic steam valve lt) erected in a suitable location thereon and the automatic steam valve 19 is eoiiuected by means et a pipe 2O with the pilot valve 21. The eteain valve lt) is arranged to remain iii-its open position and admit steam to the st`ean'i f i'linder of the compressor so long as the pilot valve 21 remains in it l closed position.

'llie pilot valve 2l is provided with a trigger 22 which is operatively engaged by the end of the solenoid core 1.7, the solenoid when not Aenergizetl permitting the pilotralve 2l lo romain in its closed position. When a dangerous increase in the temperature in the coinpresrior cylinder is reached, which will be indicated by the recording thermometer shown, an electric circuitl is completed through the wires lt, 15. so as to energize the solenoid coil lt and, by causing the core to more downwardly in' the coil, move the trigger 22 to release and permit the pilot valve to open. l

The pilot valve 2l.when open releases the 'steam in the pipe :2O and creates an unbalanced pressure in the chamber 20 of the automatic steam valve whereby this Valve automatically closed, and by such closingr 'iiiorenieut the supply of steam to the steam cylinder ot' the compressor is shut off s0 that continued operation of the compressor is stopped.

The operation et' my iiiiprtived apparatus is tollowsrv'lhe pai-tsl are arranged as hown with the pilotv vali. e 2l in closed posi? ion and the Asteam valve 't9 1n its open posi-f' so` Y s wenn: zg/kinda; i hun Gf the .s pas mg from z The compressor s than star CIV 

